Katy Perry and Cheryl Cole out for "X-Factor"

Ready to participate in a second tranche of the UK's top talent show, was Katy Perry and Cheryl Cole both spotted arriving at the "X Factor" studios in London on Sunday (October 17). While Cheryl dressed casual in front of her judgments are required, Katy turned a bit more glammed up when she accidentally night a special guest performer. Once the concert began, Miss Perry took the stage in a sexy Lycra ensemble, while treating audiences to his new single "fireworks.”